#1427 - QueryCache should be cleared, if one of a dependent bean is updated

Initial work, does not include propagation across cluster.

src/main/java/io/ebeaninternal/server/transaction/ImplicitReadOnlyTransaction.java

@@ -67,6 +67,7 @@ class ImplicitReadOnlyTransaction implements SpiTransaction, TxnProfileEventCode
   private Map<String, Object> userObjects;
 
   private long startNanos;
+  private long startMillis;
 
   /**
    * Create without a tenantId.
@@ -79,6 +80,7 @@ class ImplicitReadOnlyTransaction implements SpiTransaction, TxnProfileEventCode
     this.connection = connection;
     this.persistenceContext = new DefaultPersistenceContext();
     this.startNanos = System.nanoTime();
+    this.startMillis = manager.clockNowEpoch();
   }
 
   /**
@@ -89,6 +91,12 @@ class ImplicitReadOnlyTransaction implements SpiTransaction, TxnProfileEventCode
     this.tenantId = tenantId;
   }
 
+  @Override
+  public long getStartMillis() {
+    // not used on read only transaction
+    return startMillis;
+  }
+
   @Override
   public void setLabel(String label) {
     // do nothing